In your guessing game, you replaced dashes in blanks when the user guessed a correct letter by using a string slice. Which line of code will replace the character with an index of n with the guessed letter?
blanks = blanks(n) + letter + blanks(n+1)
blanks = blanks[:n] + letter + blanks[n+1:]
blanks = blanks(:n) + letter + blanks(n+1:)
blanks = blanks[n] + letter + blanks[n + ]